Reworks the way the ledger waits for genesis start.

[batconjurer]

Resolves #2495

Describe your changes

It now fully initializes the node and outputs logs before sleeping until genesis start time. Previously it would not start any processes until genesis times, giving no feedback to users until genesis time was reached.

Indicate on which release or other PRs this topic is based on

Checklist before merging to draft

• [x] I have added a changelog
• [x] Git history is in acceptable state